tool
extends PanelContainer
class_name SummerDayCanvas

var scene: SummerDayScene
var canvas_state := SummerDayCanvasState.new()
var tool_pool := SummerDayCanvasToolPool.new()

var tool_context: SummerDayToolContext # Provided by plugin root.


func _ready():
	tool_context.canvas_state = canvas_state
	canvas_state.connect("view_transform_changed",
	$Render/BackgroundLayer/EmptyCanvasLayer, "_on_view_transform_changed")


func _gui_input(event):
	tool_pool.run_most_prior(event, tool_context)


# _gui_input() cannot receive released event so we do this here.
func _input(event):
	if event is InputEventScreenTouch and !event.is_pressed():
		tool_pool.run_most_prior(event, tool_context)


func _on_SummerDay_scene_changed(new_scene):
	scene = new_scene
	canvas_state.update_fill_transform(scene)
	scene.connect("aspect_ratio_changed",
		self, "_on_scene_aspect_ratio_changed")
	$Render/Label.text = str(scene) + "\n" + str(scene.aspect_ratio)
	$Render/BackgroundLayer/EmptyCanvasLayer.update_size(scene)
	canvas_state.update_fill_transform(scene)


func _on_Canvas_resized():
	canvas_state.rect_size = rect_size
	canvas_state.update_fill_transform(scene)


func _on_scene_aspect_ratio_changed(new_aspect_ratio):
	$Render/BackgroundLayer/EmptyCanvasLayer.update_size(scene)
	canvas_state.update_fill_transform(scene)